Foster Farms says the FSIS will continue to monitor compliance with the plan as well as the conditions at the plant.

This all comes months after a massive salmonella outbreak that spread to at least 23 states and Puerto Rico and sickened hundreds of people, including dozens in California.

The U.S. Department of Agriculture had issued a health warning for the chicken but did not issue a recall. A spokesman for Foster Farms said the infections were caused by eating undercooked or improperly handled chicken.

An agreement made in October between the USDA Food Safety Inspection Service and Foster Farms allowed the Foster Farms plants in California, two plants in Fresno and one in Livingston to remain open, as long as they enhance food safety practices.